An I-shaped steel pipe with internal baffles and retractable variable cross-section inner core anti-buckling and energy-dissipating support member

Abstract

The invention discloses a bending-prevention limiting energy-dissipation supporting component with a steel pipe with baffles inside and an I-shaped inward contracting type variable-section inner core, and belongs to the technical field of bending-prevention limiting energy-dissipation supporting components. The I-shaped steel core sequentially includes a non-variable-section section a, section-decreasing sections b and a connecting section c from the two ends to the middle, wherein the section-decreasing sections b are respectively near the two ends of the external limiting steel pipe, limiting grooves correspond to the section-decreasing sections b, a T-shaped-section baffle is welded to each limiting groove, the section-decreasing sections b of the I-shaped steel core contract inwards at the rope angle of 60 degrees, the T-shaped-section baffles are inserted into limiting groove web plates and are parallel with a cross steel core of each section-decreasing section, and intervals are reserved in the web plates of the T-shaped-section baffles and the section inward contracting position of the I-shaped steel core. When the bending-prevention limiting energy-dissipation supporting component is stressed, the steel core dissipates energy and yields firstly, when yielding deformation of the steel core is limited by the baffles arranged inside the outer steel pipe, the outer steel pipe and the yielded steel core are jointly stressed, the rigidity of the outer steel pipe is large, the rigidity of the yielded steel core can effectively limit overall lateral movement of the structure formed after the steel core yields, and the limiting effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of anti-buckling energy-dissipating support members, and relates to an engineering structure anti-seismic energy-dissipating and position-limiting support member, in particular to a steel core with a variable cross-section I-shape and an outer restraint sleeve with a baffle inside. Anti-buckling energy-dissipating support members. When the anti-buckling support is stressed, the partially reduced steel core first yields and consumes energy. When the deformation reaches a certain level, the steel core is restrained by the built-in baffle of the outer steel tube, which drives the outer steel tube to participate in the later limit work. Background technique [0002] Buckling-restrained brace is also called buckling-restrained brace or BRB (Bucklingrestrained brace). The product technology was first developed in Japan in 1973. A group of Japanese scholars at that time successfully developed the earliest wall-type...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a variable-section anti-buckling energy-dissipating support member to solve the problem that the existing anti-buckling support has no displacement control device

Images